Machine for turning crank-pins.



J. KESSLER & J. WESS.

MACHINE lPOR TURNINGCRANK PINS. APPLICATION FILED N0v.23,191o.

Llg, Patented Jan. 16,1912.

2 SHEETSA-SHEET 1,

J. KBssLBR an Jl WEISS. MAGHIN FOR TURNING CRANK PINS.

APPLICATION FILED NOV. 23, 1910..

Patented Jan. 16, 1912.

2 SHEETS-SHBBT 2.

' WITNESSES INYENTGRS .UNITED STATES* PATENT OFFICE.

.moois x-EssLEn AND JOHN WEISS", or PITTSBURGH, PENNSYLVANIA.

MACHIN FOB TURNING. CRANK-PINS.

A Patented J an. 16, 1912. Application led November 23, 1910. Serial No. 593,811.

Specification of Letters Patent.

To all iv/Lom z't may/concern:

Be it.known that we, JACOB KiissLER andv JOHN WEISS, citizens of the United States of America, residing at Pittsburgh, in the* county of Allegheny and State of Pennsyl'v -chine especially designed for turning the wrist or crank pins of the drive whcelsof locomotives or stationary engines, andethe primary object of the invention is to 'provide a machine of the above type that will be portable, strong and durable, easy to opcrate and efficient forlthe purposes for which it is intended .l In accomplishing the above object, we first aim to provide a machine that is portablel and easily placed in position to turn-the sui-face of a pin without necessitating the removal of thedrive Iwheel from the locomotive or the placing of the locomotive in a round-house or machine shop, it being only necessary to remove the drive bar and its bearings, place the vmachine in position, turn the pin and then replace thedrive bar in its bearings, theloconiotive being again ready for service. Inthe second place, the4 machine is provided with an automatic feeding device or a -hand feeding device, either of which can be used for accurately turning 'the wrist or crank pin of the drive wheel.'

These'objects will be better understood when reference is had to the drawings and'" structural details to be hereinafter specifi:

cally. described and then claimed.

In the drawings Figure 1 is a longitudinal sectional view of a turning machine set up for operating upon a wrist or crank pin, Fig. 2 is .an endl view of the machine,.

Fig. 3 is avertical sectional view taken on the line III-III of Fig. 1, Fig. et is a plan, of the machine, Fig. 5 is an enlarged longitudinal sectional vview of a portion of the same, and Fi 6 is a crosssect-ional view taken on the line VI-VI of Fig. 5.

A machine in accordance with `this inventioii. comprises two standards l and 2 having the lower ends thereof connected by bolts 3 or other fastening means. The standards 1 and 2 are arranged in parallelism and have the upper-ends thereof priivided with longitudinally alining openings 4..v Revolubly'mounted'in-said openings is a cylindricaltool holder 5, said holder having the outer end thereof provided with a longitudinal enlargement 6 cut away to provide a seat 7 .for an extension nar 8, said liar being secured in t-he seat 7 by screw bolts 9 or other fastening means. .The `outer end of the extension bar 8 liasan opening 10 for a turning .tool or bitill, said. tool or bit being fixed within the opening 10 byaset screw 12. The tool holder 5 is provided with a longitudinal-bore13, the forward'.

end of said bore being open and the rear end thereof closed with the exception of a small opening 14. Extending into .the,b0re 13 `js a tubular guide 15, said guide having the forward inner `walls thereof screw threaded,

.as at 16,'to screw upon the threaded spindle 17 of a wrist or crank pin 18. The tubular guide has the rear end thereof closed as at 19 and provided with a threaded opening l for a feed screw 20,'said feed screw extending rearwardly through the opening 14 and having the end thereof provided witha. star wheel 21 and a'detachable crank 22.

Keyed or otherwise linounted upon the tool holder 5 between the standards 2 and 3 is a gear wheel 23 meshingjwith a gear wheel 24 mounted'upon a shaft 25 journaled in the standards 1 and 2, said shaft having one end thereof protruding through the standard 2 and provided with-an actuating wheel 26 for the 'star wheel 21, said-.actuating wheel comprising a hub having radially disposed spokes adapted to impinge the radally disposed curved arms of the star wheel 21.

Meshing with `the gear wheel 24 is a. small gear wheel 27 mounted upon a shaft 28 journaled in the standards 1 and 2 and in `an additional bearing 29 provided' on the lower end of the shaft 28. The forward end of' the shaft 28 is provided' witha. tapering shank I30 and this .shank is .adapted to' extend into a socket 31.provided therefor in v the engine, a suitable sup rt 35 -is arranged in proximity to the whee 34 to support the standards 1 and 2'and. the additional bearing 39. After the tubular guide 15 has been connected to the threade spindle 17, the

extension bar SI-{andpthe bit 11 placed'inlwithout removing the drive wheel 34 from 4position, the 'screw 20-can be manually rio? tated by the crank 22 to properly position the bit 1 1 for. turning the pin 18. The portable v motor 33 can the1` be placed in engagement with the shaft 28, 4the motor, started and through the medium/of the gears 27, 24 and 23, the tool 'holder 5 will be revolved and automatically fed forward through the medium of the actuating wheel26, the -star wheel21 and the screw 20. The standards 1 and 2 will gradually' creep forward upon the support 35 'as 'the bit` 11 advances upon the'ipin 18, this pin i-n Fig. 1 of the ldrawings. having been shown as partly turned.

The portable motor 33,` which is support- '.ed` by' the ,operator of the machine, yhas simply been shown as one source of power v so. l

for operating thejshaft 28, and it is obviousA that a flexible shaft from a suitable source of, power -oouldbe used for the samepurpse as .the motor. Whatwe claim is:-'

l. A'crankpin turnngmachine compris- Aing a guide fiize'dly engagingwithithe crank' pin, a rotatable tool carryingelement;sur-A -prounding the guide; av feedV screw extendingv in said element andengaging with the guide, vmeans whereby said element is shifted longitudinall'y of the guide when the feed screw A"fcllefeed screw,a star wheel carried by the screw and interposed between said element and the crank, and a rotatable Iactuating Wheelprovided with spokes adapted to en- ;gagerthe arms of the star Wheel for intermittently revolving -it thereby rotating the screw. v

2. A crank pm turning machine comprising 'a' guide iXedly engaging with the crank gage the arms ofthe star wheel for intermittently revolving it thereby rotating the screw, said actuatingwheel arranged below said star Wheel..

l AIii-testix'non'y whereof we aflix our signatures inthe presence of two witnesses.

`JACCB K SSLER.

g JOHN WEISS.

Witnesses:l

DAvln Furman, L. B; MCCONAGHEY.' 

